Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7426110 | Centrifugal fan clutch for an electronics cooling fan An electronics cooling fan comprises a centrifugal clutch adapted to disengage and freewheel upon fan failure. ... | 09/16/2008 |
| 7213488 | Three way swivel divider gearbox for agricultural drive systems A swivel gearbox system having multiple drivetrain outputs is disclosed. The system comprises a swivel gearbox and an angled divider gearbox where the power input and divided power output shafts are not in the same plane. The swivel gearbox is a right angle gearbox ... | 05/08/2007 |
| 7189051 | Wind power plant A wind power plant includes four main elements: a foundation (29), at least one supporting structure (21), a carrying construction (23) having a vertical axis (25) and being rotatable around the vertical axis, and at least one rotor (4... | 03/13/2007 |
| 7077629 | Multi-fan assembly A multi-fan assembly whose revolution speed can be controlled by a member fan designed with a reverse rotating structure, which includes a housing in which is provided a rotatable member; a positive-rotation member fan is equipped with a positive-rotation motor, the... | 07/18/2006 |
| 7052242 | Multi-fan assembly comprising a servomotor driven vertical oscillation means for each fan A multi-fan assembly includes: a down rod assembly having a first end for fixing to a ceiling wall and having a second end provided with a canopy, a rotary assembly being fixed to a lower end of the down rod assembly and covered by the canopy. At both sides of the r... | 05/30/2006 |
| 6722859 | Electromagnetic device capable of controlling the revolving speed of a multi-fan assembly A multi-fan assembly with a built in electromagnetic control device composed of a magnetic induction mask fixedly received in a space in a rotatable member, a magnetic flux coil fixedly connected to a central main shaft and snugly surrounded by the magnetic inductio... | 04/20/2004 |
| 6641367 | Wind energy conversion apparatus A wind energy conversion apparatus comprising a supporting structure including a number of spokes, which is rotatably journalled on a horizontal main shaft, wherein auxilliary rotors having an at least substantially circular plane of inflow are mounted on... | 11/04/2003 |
| 6227483 | Wing movement for ornithopters and apparatus of the like The wing movement has a gearbox, a reference gear extending through the gearbox and being movably mounted to the gearbox, an input shaft extending through the reference gear and into the gearbox and first and second output shafts movably extending from th... | 05/08/2001 |
| 5131805 | Dual axis fluid current motor Apparatus and method for harnessing fluid energy from a fluid current and converting it into mechanical energy. The invention comprises a big wheel and a little wheel where the little wheel rotates about on axis parallel to but offset from an axis about w... | 07/21/1992 |
| 4936748 | Auxiliary power source in an unducted fan gas turbine engine A power takeoff for an unducted fan gas turbine engine having first and second counterrotating coaxial rotors coupled respectively to first and second propellers. The rotors and propellers are oriented for rotation about a longitudinal axis of the engine.... | 06/26/1990 |
| 4881874 | Tail rotor A helicopter tail rotor (10, 130) includes a drive mast (12) having an axis of rotation (14). A first blade pair (20) is mounted for rotation about the drive mast (12). The first blade pair (20) includes a pitch change axis (54) perpendicularly disposed t... | 11/21/1989 |
| 4828458 | Auxiliary helicopter rotor An auxiliary helicopter rotor on which at least two blades extend radially from a hub, each of which blades presents a root connecting it to the hub, and a beam having two wings extending respectively along the back and face of the blade; the wings of the... | 05/09/1989 |
| 4759514 | Tail rotor yaw position control for a helicopter A yaw rate stabilizer for the tail rotor of a helicopter includes a tail rotor shaft rotatably supporting a tail rotor on which rotor blades are radially mounted to develop a lift force directed substantially horizontal and transverse to the longitudinal ... | 07/26/1988 |
| 4659286 | Main helicopter drive Main helicopter drive for transmitting drive to the countershaft even when the main shaft connected to the rotor is idle, and on which a sleeve, turned by a drive shaft and connected by gears to the countershaft, supports in rotary and axially-sliding man... | 04/21/1987 |
| 4653705 | Autogyro with auxiliary rotor drive An improved autogyro including a main airframe having a main engine and pusher propeller as customarily applied in autogyros, and a lifting rotor having an auxiliary drive for the lifting rotor for tapping a minor portion of power from the main propulsive... | 03/31/1987 |
| 4585391 | Tail rotor arrangement with increased thrust for rotary wing aircraft and device for increasing the thrust of such an arrangement A tail rotor arrangement for rotary wing aircraft, comprising a tunnel of axis X--X transverse with respect to the aircraft and in which is disposed a multi-blade rotor coaxial with respect to the tunnel and generating a transverse air flow. The arrangeme... | 04/29/1986 |
| 4509899 | Traversing blade-rotary propeller A traversing blade rotary propeller useful as a propulsion system for various types of boats and aircraft or as a wind or water actuated turbine. A traversing blade rotary propeller of this type includes a stationary main shaft, a mount to which an end of... | 04/09/1985 |
| 4347997 | Helicopters A helicopter including a power absorber arranged to selectively absorb power from a sustaining rotor system during deceleration. In an illustrated embodiment for a helicopter having a single sustaining rotor, the power absorber comprises a tail rotor asse... | 09/07/1982 |
| 4272041 | Model helicopter device A model helicopter device wherein a countertorque generated in the helicopter body by changes in the revolution of a main rotor is canceled by substantially detecting the acceleration of the revolution of the main rotor and automatically adjusting the pit... | 06/09/1981 |
| 4166222 | Wind wheel apparatus for use with a hydro-electric dam Disclosed herein is an apparatus for fashioning a wind wheel apparatus that utilizes the wheat field principle in association with a power generating station to provide back pumping in a dam environment to provide a greater efficiency. Specifically, a dou... | 08/28/1979 |
| 3977812 | Compound helicopter drive means Compound helicopters, those having a rotor blade and a small wing, possess rear propulsion propeller adjacent to the tail rotor. The tail gearbox is driven through a drive train coupled to the main rotor drive shaft. In such aircraft the tail rotor is in ... | 08/31/1976 |
